<template>
	<section>
		<!--工具条-->
		<el-col :span="24" class="toolbar" style="padding-bottom: 0px;">
			<el-form :inline="true" >
				<el-form-item>
					<el-input v-model="keyword" placeholder="关键字"></el-input>
				</el-form-item>
				<el-form-item>
					<el-button type="primary" v-on:click="keywordQuery">查询</el-button>
				</el-form-item>
				<el-form-item>
					<el-button type="primary" @click="handleAdd">新增</el-button>
				</el-form-item>
			</el-form>
		</el-col>

		<!--列表-->
		<el-table :data="menus" highlight-current-row v-loading="listLoading" @selection-change="selsChange" style="width: 100%;">
			<el-table-column type="selection" width="55">
			</el-table-column>
			<el-table-column type="index" label="序号" width="60">
			</el-table-column>
      <el-table-column prop="name" label="名称" width="110" sortable>
      </el-table-column>
      <el-table-column prop="parent.name" label="上级菜单" width="110" sortable>
      </el-table-column>
      <el-table-column prop="url" label="访问URL" width="140" sortable>
      </el-table-column>
      <el-table-column prop="component" label="组件路径" width="160" sortable>
      </el-table-column>
      <el-table-column prop="icon" label="图标" width="130" sortable>
      </el-table-column>
      <el-table-column prop="intro" label="简介" width="80" sortable>
      </el-table-column>
      <el-table-column prop="state" label="状态" width="80" sortable>
        <template scope="scope">
          <span v-if="scope.row.state == true" style="color: green">启用</span>
          <span v-else style="color: red">禁用</span>
        </template>
      </el-table-column>
			<el-table-column label="操作" width="150">
				<template scope="scope">
					<el-button size="small" @click="handleSave(scope.$index, scope.row)">编辑</el-button>
					<el-button type="danger" size="small" @click="handleDel(scope.$index, scope.row)">删除</el-button>
				</template>
			</el-table-column>
		</el-table>

		<!-- 批量删除和分页栏 -->
		<el-col :span="24" class="toolbar">
			<el-button type="danger" @click="batchRemove" :disabled="this.sels.length===0">批量删除</el-button>
			<el-pagination layout="prev, pager, next" @current-change="handleCurrentChange" :page-size="pageSize" :total="totals" :current-page="currentPage" style="float:right;">
			</el-pagination>
		</el-col>

		<!-- 编辑界面 -->
		<el-dialog :title="title" :visible.sync="saveFormVisible" :close-on-click-modal="false">
			<el-form :model="saveForm" label-width="80px" :rules="saveFormRules" ref="saveForm">
        <el-form-item label="上级菜单">
          <el-cascader v-model="saveForm.parent_id"
                       :options="menuTree"
                       :props="{
            	checkStrictly: true,
                label: 'name', // 级联框显示那个属性的值
                value: 'id'    // 回显时需要,回传值的时候也需要
            }" clearable>
          </el-cascader>
        </el-form-item>
        <el-form-item label="名称" prop="name">
          <el-input v-model="saveForm.name" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="排序" prop="index">
          <template>
            <el-input-number v-model="saveForm.index" controls-position="right" :min="1" :max="10"></el-input-number>
          </template>
        </el-form-item>
        <el-form-item label="访问URL" prop="url">
          <el-input v-model="saveForm.url" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="组件路径" prop="component">
          <el-input v-model="saveForm.component" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="图标" prop="icon">
          <el-input v-model="saveForm.icon" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="简介" prop="intro">
          <el-input v-model="saveForm.intro" auto-complete="off"></el-input>
        </el-form-item>
				<el-form-item label="状态">
					<el-radio-group v-model="saveForm.state">
						<el-radio class="radio" :label="true">启用</el-radio>
						<el-radio class="radio" :label="false">禁用</el-radio>
					</el-radio-group>
				</el-form-item>

			</el-form>
			<div slot="footer" class="dialog-footer">
				<el-button @click.native="saveFormVisible = false">取消</el-button>
				<el-button type="primary" @click.native="saveSubmit" :loading="saveLoading">提交</el-button>
			</div>
		</el-dialog>
	</section>
</template>

<script>
	export default {
		data() {
			return {
			  // 1.分页查询的模型数据
        menus: [],
        totals: 0,
        listLoading: false,
        currentPage: 1,
        pageSize: 5,

        // 2.高级查询的模型数据
        keyword: '',

        // 3.批量删除
        sels: [],//列表选中列

        // 4.添加和修改的模型数据
				saveFormVisible: false,//编辑界面是否显示
				saveLoading: false,
        title: '',
				saveFormRules: {
					url: [
						{ required: true, message: '', trigger: 'blur' }
					],
          name: [
            { required: true, message: '', trigger: 'blur' }
          ],
          component: [
            { required: true, message: '', trigger: 'blur' }
          ],
          index: [
            { required: true, message: '', trigger: 'blur' }
          ]
				},
				//编辑界面数据
				saveForm: {
					id: null,
          component: '',
					name: '',
          url: '',
          icon: '',
          intro: '',
          index:null,
          state: true,
					parent_id: null
				},

        // 5.上级菜单无限极树
        menuTree: [],

			}
		},
		methods: {
      //1.获取菜单列表
      getMenus() {
        let para = {
          currentPage: this.currentPage,
          pageSize: this.pageSize,
          keyword: this.keyword
        };
        this.listLoading = true;
        this.$http.post("/menu", para).then(res => {
          this.menus = res.data.data;
          this.totals = res.data.totals;
          this.listLoading = false;
        }).catch(res => {
          this.$message.error("网络繁忙，请稍后重试！");
        })
      },

      // 2.点击实现分页查询方法
      handleCurrentChange(val) {
        this.currentPage = val;
        this.getMenus();
      },

      // 3.高级查询的方法
      keywordQuery() {
        // 将当前页更置为1，防止在其他页查询时出现bug
        this.currentPage = 1;
        this.getMenus();
      },

      // 4.删除
      handleDel: function (index, row) {
        this.$confirm('确认删除该记录吗?', '提示', {
          type: 'warning'
        }).then(() => { // 点击确认
          this.listLoading = true; // 打开加载框
          this.$http.delete("/menu/" + row.id).then(res => {
            if (res.data.success) {
              // 当删除掉当前页的最后一条数据后，跳转到前一页，如果当前页是最后一页，删除最后一条数据后，还是停留在当前页
              let pageTotals = Math.ceil(this.totals / this.pageSize);
              if (this.currentPage == pageTotals && (this.totals - 1) % this.pageSize == 0 && this.currentPage != 1) {
                this.currentPage = this.currentPage - 1;
              }
              this.getMenus();
            } else {
              this.$message.error("系统繁忙，请稍后重试！");
            }
            this.listLoading = false; // 关闭加载框
          }).catch(res => {
            this.$message.error("系统繁忙，请稍后重试！");
          })
        }).catch(() => { // 点击取消
        });
      },

      // 5.选中后数组改变
      selsChange: function (sels) {
        this.sels = sels;
      },

      // 6.批量删除
      batchRemove: function () {
        var ids = this.sels.map(item => item.id);
        this.$confirm('确认删除选中记录吗？', '提示', {
          type: 'warning'
        }).then(() => {
          this.listLoading = true;
          this.$http.patch("/menu", ids).then(res => {
            if (res.data.success) {
              this.currentPage = 1;
              this.getMenus();
            } else {
              this.$message.error("系统繁忙，请稍后重试！");
            }
            this.listLoading = false; // 关闭加载框
          }).catch(res => {
            this.$message.error("系统繁忙，请稍后重试！");
          });
        }).catch(() => { // 点击取消
        });
      },


      // 7.点击编辑按钮弹出对话框
      handleSave: function (index, row) {
        this.title = "修改菜单";
        this.saveForm = Object.assign({}, row);
        this.getMenuTree();
        this.saveFormVisible = true;
      },

      // 8.点击新增按钮弹出对话框
      handleAdd: function () {
        this.title = "添加菜单";
        this.saveForm = {
          id: null,
          component: '',
          name: '',
          url: '',
          icon: '',
          intro: '',
          index:null,
          state: true,
          parent_id: null
        }
        this.getMenuTree();
        this.saveFormVisible = true;
      },

      // 9.添加和修改的方法
      saveSubmit: function () {
        this.$refs.saveForm.validate((valid) => {
          if (valid) {
            this.$confirm('确认提交吗？', '提示', {}).then(() => {
              this.saveLoading = true;
              let result = this.saveForm.parent_id;
              if (result == null || result.length == 0) {
                this.saveForm.parent_id = null;
              }
              if(result.length){
                this.saveForm.parent_id = result[result.length - 1];
              } else {
                this.saveForm.parent_id = result;
              }
              this.$http.put("/menu",this.saveForm).then(res => {
                if (res.data.success) {
                  this.getMenus();
                } else {
                  this.$message.error("系统繁忙，请稍后重试！");
                }
                this.listLoading = false; // 关闭加载框
                this.saveLoading = false;
              }).catch(res => {
                this.$message.error("系统繁忙，请稍后重试！");
              });
              // 关闭对话框
              this.saveFormVisible = false;
            });
          }
        });
      },

      // 10.上级菜单无限极树的方法
      getMenuTree() {
        this.$http.get("/menu/menuTree").then(res => {
          this.menuTree = res.data;
        });
      }
    },
		mounted() {
			this.getMenus();
		}
	}
</script>

<style scoped>

</style>